Shaving device



y 1941- G. DALKOWITZ 2,243,196

SHAVING DEVICE Filed June 22, 1937 I N V EN TOR. 17 GODFREYJHL K0 yv/ TzAT RNEY Patented May 27, 1943 SHAVING DEVICE Godfrey Dalkowitz,Brooklyn, N. Y., assignor to American Safety Razor Corporation,Brooklyn, N. Y., a corporation of Virginia Application June 22, 1937,Serial No. 149,568

2 Claims.

This invention relates to the art of shaving and in particular to theart of dry shaving, that is, shaving without the use of unguents ordetergents applied to the hair to be removed.

Among the objects of my invention is the provision of an implement fordry shaving having relatively movable parts and said parts carryingcutting edges that are adapted to coact so as to efiect a clipping orshearing action; the provision in a dry shaving implement of a fixedmember having a slot therein, a portion of the sides of said slot beingadapted to act as cutting edges and other portions of the slot beingadapted to receive hair and to guide them into the zone of action of thecutting edges as the dry shaver is moved over the surface to be shaved;the provision in a dry shaver of means for permitting the escape of thewaste products of the shaving operation from the active shaving zone;the provision in a dry shaver of means for securing at all times contactbetween the fixed and the movable parts; the provision in a dry shaverof a plurality of sets of coacting cutting edges; the provision in a dryshaver of a plurality of sets of coacting cutting edges arranged so thatthey successively pass over a given portion of the surface to be shaved;the provision of sets of coacting cutting edges separated from eachother by a depression or recessed portion; the provision in a dry shaverof a plurality of sets of coacting cutting edges, the cutting edges ofat least one of said sets having portions out of alignment with otherportions thereof; and the provision in a dry shaver of a disposition andarrangement of parts adapted for securing efilcient action.

For the attainment of these objects and such other objects as willhereinafter appear or be pointed out I have illustrated severalembodiments of my invention in the drawing wherein- Figure 1 is aperspective View of a shaving head illustrative of one embodiment of myinvention;

Figure 2 is an exploded view in perspective, on an enlarged scale, ofthe parts thereof;

Figure 3 is a longitudinal cross sectional view, also on an enlargedscale, of the shaving head, of Figure 1, this view being taken along theline 3-3 of Figure 4, looking in the direction of the arrows;

Figure 4 is a transverse sectional view through the shaving head ofFigure 1 taken on the line 3-8 of Figure 3, looking in the direction ofthe arrows, and on a still further enlarged scale, and

Figure 5 is a sectional view similar to Figure 4, of a modified form ofmy invention.

Shaving heads constructed according to the present invention asexemplified in the disclosure herein may be characterized by statingthat they have two active 'or cutting portions spaced from each other byan unobstructed interval. The cutting edges of the respective cuttingportions are formed on the sides of parallel slots, the slots of eachcutting portion arranged in a row, and the two rows being parallel toeach other, and the slots of the respective cutting portions are alignedin pairs. If the shaving head is moved over a surface to be shaved inthe direction of the slots, hairs entering the foremost cutting portionand escaping cutting therein will move through the space between thecutting portions to be acted on by the second cutting portion.

Referring now to the drawing in detail I have shown in Figures '1 to 4inclusive a first illustrative embodiment of my invention. In thesefigures the shaving head is shown as comprising a shear plate or guardplate A, a cutter B and a base block C, the latter serving to supportthe parts of the shaving head and when in use being mounted in a handleportion D, indicated in dotted lines.

The shear plate A is shown as formed with two longitudinal raisedportions or ribs in and I2 and these are connected by a depressedportion I6 extending between them, and depressed flanges or ribs it andIt are shown positioned -on the outer portions of the ribs l0 and 52.Running transversely across these rib portions is a series of slots 29,these slots being shown as extending entirely across and through theupper walls of the ribs and also through the side walls thereof, theseside walls being shown as inclined, al-

though not'necessarily so. The inner or lower edges of the side walls 2!of these slots serve as cutting edges. It will be understood of .course,that the shear plate is made of a material suitable for the function itis to perform, a material such, for example, as hardened steel.

The cutter B is in general complementary in form to the shear plate Aand is shown in Figure 4 as positioned along the underside thereof andas being provided with slots 22 running transversely across the ribportions 24 and 26 thereof, which rib portions are spaced by thedepressed portion 2i. The sides of the slots 22 are provided withcutting teeth 23 on their outer edges.

The shear plate A is provided with means for securing the same to thebase block C, such means being shown in the form of screws 28 adapted topass through the openings 30 in the shear plate and into the threadedopenings 32 provided in lugs 3| extending upwardly fromthe base block.It will be observed that as a result of this mounting a space is leftbetween the base block B and the shear plate, and within this space isaccommodated the cutter B, this cutter being free to slidelongitudinally'therein and being guided by and restricted to suchlongitudinal movement by the side walls of the lugs 34 which engage thewalls of the slots 36 provided in the ends of the cutter B. The innerwalls of said slots further act as stops to limit the extent oflongitudinal movement of the cutter.

An opening 38 is shown in the base block and through thhr openingextends a reciprocating member E actuated by any suitable source ofpower located in the handle or elsewhere, and the upper end of whichpasses into a slot 40 in the cutter for the purpose of reciprocating thesame in relation to the shear plate A. In order to insure contactbetween the cutting portions of the shear plate and the cutter I haveshown, by way of example, resilient means comprising cup shaped members42 positioned within bores 44 provided in the base block C and urgedupwardly against the lower surface of the cutter B by compressionsprings 46 also located within said bores.

It will be observed that the drawing shows the cutter B as spaced fromthe base block C, whereby any friction between these parts that wouldserve to unnecessarily impede the movement of the cutter B is avoided.For similar reasons the cutter B is spaced from the shear plate A exceptat those portions where contact is necessary to insure the cuttingaction. This latter construction moreover serves to prevent contact ofthe cutter B and the shear plate A only at portions other than thecutting areas and without preventing contact thereof at the cuttingareas, whereby the necessary contact at the cutting areas is secured.

In using the razor I have found that excellent results are obtained bymoving the head across the surface to be shaved in the direction of theslots so that hairs will enter the slots on one side pass along them,while the cutter moves transversely across the slots and shears off thehairs, and if any hairs should escape the cutting or be incompletely outthey will pass through the intervening spaces and enter the second setof slots where they will again be exposed to the cutter. It willtherefore be observed that the hair may pass unobstructedly from oneside of the shear plate to the other and through two separate cuttingzones. In the first portion they will be subjected to what may be termeda preliminary shaving operation, while in the second rib portion asecond shaving operation that may be termed a close shave" is obtained.

While I have not illustrated this feature it will be understood that onecutting portion may have different characteristics from the other, forexample, the shear plate of one portion may be relatively thick so thatthe preliminary shaving portion will be relatively coarse, while theshearplate of the other portion may also be very thin, so that a veryclose shave may be effected.

It is also within my contemplation to position the slots of the two setsin staggered relation so as to make more certain that areas remainingunaffected by the first cutting operation will be subjected to a cuttingaction in the second set of slots.

It. is also within my contemplation to have different widths inthe twosets of slots. For instance the first set may have .its slots relativelywidely spaced while the second set which serves for the final or closeshave will have its slots relatively narrow. Then again'the spacing orpitch of the 'slots of the two sets may be different. For example, wherewide slots are used they may be spaced farther apart, while when' narrowslots are used they may be placed more closely together.

Instead of using only two successively acting cutting areas, obviouslyit may be found of advantage to use more than two such areas, and thesemay have differing characteristics.

It will be observed that the shaving waste which is generated at themeeting points of the cutting edges of the shear plate and the cutterwill be free to pass through the slots 20 and 22 either to the outsideof the shear plate or to the underside of the cutter. In either casewhatever waste collects on the razor is readily removable and is notaccumulated at an interior portion of the shaving head from which itwould be difficult to remove.

In Figure 5 I have shown a modified form of shaving head which resemblesin its action the shaving head of Figures 1 to 4 but differs therefromin that the transverse contours of the rib portions are arched along acurve instead of having the angular conformation shown in Figures 1 to4. To avoid unnecessary description similar parts of this shaving headhave been lettered and numbered similarly to the corresponding parts ofFigures 1 to 4, the letters and numbers however being primed.

While I have shown and described several illustrative embodiments of myinvention it is to be understood that my invention may be embodied inmany other forms as will be obvious to those skilled in the art and thatthe disclosure herein is to be interpreted as illustrative merely andnot in a limiting sense and that I do not limit myself in any way otherthan as called for by the prior art.

Having thus described my invention and illustrated its use, what I claimas new and desire to secure by Letters Patent is:

1. In a dry shaver head, a stationary cutter comprising a flathorizontal face engaging surface portion of substantially uniformthickness, an outwardly and downwardly inclined flange on each side ofsaid portion, a movable cutter having a flat portion of substantiallyuniform thickness in contacting relation with said fiat portion of saidstationary cutter and also having an outwardly and downwardly inclinedflange on each side thereof respectively in contacting relation withsaid flanges of said stationary portion, transverse slots in said flatportion of the movable cutter traversing said flat portion and saidflanges and extending to a depth just suflicient to form openingsthrough said flat portion, and transverse slots extending through saidflat portion and said flanges of the stationary cutter to a depthcoextensive with the slots of the movable cutter when said cutters arein assembled relation, and horizontal reinforcing ribs extendingoutwardly from the flanges of said stationary cutter and the flanges ofsaid movable cutter.

2. In a dry shaver head, a stationary cutter} comprising a pair ofspaced, parallel, fiat horimntal face engaging surface portions each ofsubstantially uniform thickness, an outwardly and downwardly inclinedflange on each side of and the flanges thereof and extending to a depthsuflicient to form openings through said flat portion, and transverseslots extending through each said fiat portion of the stationary cutterand its flanges to a depth coextensive with the slots of the movablecutter when said cutters are in assembled relation and a horizontalreinforcing rib extending outwardly from each of the other flanges ofsaid stationary and said movable cutters at substantially the level oftheir respective horizontal interconnecting portions.

GODFREY DALKOWITZ.

